Crime Busters B

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Crimesolver
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Re: Crime Busters B

Post by Crimesolver » March 10th, 2019, 2:28 pm

wec01 wrote:1. What is the most common fingerprint type (between loops, arches and whorls)?
2. List three fingerprint development techniques.
3. What is the difference between patent, latent, and plastic fingerprints?
i studied this a dAY AGO 
1. Loop
2. Iodine fuming, nihydran, dusting
3. Patent - fingerprint created by foreign substances - visible to the eye
Patent - fingerprinted created by oils
Plastic - fingerprint that is imprinted into something.
cerritos/great oak/SOLVI/poly/wilson/r/s(!) (well this sucks)
detector: 1/2/1/12/27/1/
machines: 13/10/9/10/3/10/
sounds: 26/15/13/12/3/7/
gravity: 11/8/3/6/9/8/
circuits: 12/2/9/12/6/10/
Keep on going :)

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Re: Crime Busters B

Post by wec01 » March 10th, 2019, 2:43 pm

Crimesolver wrote:
wec01 wrote:1. What is the most common fingerprint type (between loops, arches and whorls)?
2. List three fingerprint development techniques.
3. What is the difference between patent, latent, and plastic fingerprints?
i studied this a dAY AGO 
1. Loop
2. Iodine fuming, nihydran, dusting
3. Patent - fingerprint created by foreign substances - visible to the eye
Patent - fingerprinted created by oils
Plastic - fingerprint that is imprinted into something.
you accidentally typed patent twice, the second one was meant to be latent.
Your turn
2019 Division C Nationals Medals:
4th place Fossils
5th place Sounds of Music
2nd place Thermodynamics

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Re: Crime Busters B

Post by Crimesolver » March 10th, 2019, 8:37 pm

1. What process is used to create polyester and nylon?
2. Name on type of animal fiber
3. How can you tell the difference between animal and vegetable fiber with a microscope?
cerritos/great oak/SOLVI/poly/wilson/r/s(!) (well this sucks)
detector: 1/2/1/12/27/1/
machines: 13/10/9/10/3/10/
sounds: 26/15/13/12/3/7/
gravity: 11/8/3/6/9/8/
circuits: 12/2/9/12/6/10/
Keep on going :)

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Re: Crime Busters B

Post by wec01 » March 11th, 2019, 7:15 pm

Crimesolver wrote:1. What process is used to create polyester and nylon?
2. Name on type of animal fiber
3. How can you tell the difference between animal and vegetable fiber with a microscope?
1. Polymerization
2. Wool
3. Not sure if there's anything that applies to all animal vs vegetable fibers, but some things like scales on animal fibers would give it away
2019 Division C Nationals Medals:
4th place Fossils
5th place Sounds of Music
2nd place Thermodynamics

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Re: Crime Busters B

Post by Crimesolver » March 12th, 2019, 12:35 pm

wec01 wrote:
Crimesolver wrote:1. What process is used to create polyester and nylon?
2. Name on type of animal fiber
3. How can you tell the difference between animal and vegetable fiber with a microscope?
1. Polymerization
2. Wool
3. Not sure if there's anything that applies to all animal vs vegetable fibers, but some things like scales on animal fibers would give it away
1. I was thinking of condensation
Your turn!
cerritos/great oak/SOLVI/poly/wilson/r/s(!) (well this sucks)
detector: 1/2/1/12/27/1/
machines: 13/10/9/10/3/10/
sounds: 26/15/13/12/3/7/
gravity: 11/8/3/6/9/8/
circuits: 12/2/9/12/6/10/
Keep on going :)

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Re: Crime Busters B

Post by wec01 » March 12th, 2019, 4:50 pm

List and describe the stages of hair growth
2019 Division C Nationals Medals:
4th place Fossils
5th place Sounds of Music
2nd place Thermodynamics

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Re: Crime Busters B

Post by Sapphire » April 26th, 2019, 3:09 pm

wec01 wrote:List and describe the stages of hair growth
Anagen- growing. 
Catagen- transition.
Telogen- Resting. Hair is released and falls out.

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Re: Crime Busters B

Post by wec01 » April 26th, 2019, 5:13 pm

Sapphire wrote:
wec01 wrote:List and describe the stages of hair growth
Anagen- growing. 
Catagen- transition.
Telogen- Resting. Hair is released and falls out.
Yep, your turn
2019 Division C Nationals Medals:
4th place Fossils
5th place Sounds of Music
2nd place Thermodynamics

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Re: Crime Busters B

Post by Sapphire » April 28th, 2019, 3:41 pm

What does sodium acetate do in water?

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Re: Crime Busters B

Post by wec01 » April 28th, 2019, 4:46 pm

Sapphire wrote:What does sodium acetate do in water?
-undergoes hydrolysis (reacts with water and breaks into acetate and sodium ions)
-creates a basic solution (some of the acetate ions will take protons from water molecules leaving hydroxide ions)
2019 Division C Nationals Medals:
4th place Fossils
5th place Sounds of Music
2nd place Thermodynamics

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